L.O.C.K. is an acronym for Long-lasting Original Color Keeper and this "fun, fearless" cosmetic collection is a favorite of everyone of beauty professionals.. Revered for those who appreciate user-friendly, high-quality makeup, L.O.C.K. offers convenient click-and-apply applicators - ideal whether at home or on the go. From mascaras, concealers and setting sprays to matte lipsticks, their iconic Boundation (BB + Foundation), and more, L.O.C.K.’s long-lasting formulations and rich pigments deliver stunning makeup looks for all.